Add tradcpp package, needed for making imake work.

(cherry picked from commit e0c197b2f4fa53ebd7896940e6e14170664de8e7)

pkgs/development/tools/tradcpp/default.nix

@@ -0,0 +1,20 @@
+{ stdenv, fetchurl }:
+
+stdenv.mkDerivation {
+  name = "tradcpp-0.4";
+
+  src = fetchurl {
+    url = http://ftp.netbsd.org/pub/NetBSD/misc/dholland/tradcpp-0.4.tar.gz;
+    sha256 = "c60aa356945e0b6634bd449ead6a4fca0059d2ce3ae8044cf982140bbd54e688";
+  };
+
+  # tradcpp only comes with BSD-make Makefile; the patch adds configure support
+  patches = [ ./tradcpp-configure.patch ];
+  postPatch = "chmod +x configure";
+
+  meta = {
+    description = "A traditional (K&R-style) C macro preprocessor";
+    platforms = stdenv.lib.platforms.all;
+  };
+
+}

pkgs/top-level/all-packages.nix

@@ -2823,6 +2823,8 @@ let
 
   tm = callPackage ../tools/system/tm { };
 
+  tradcpp = callPackage ../development/tools/tradcpp { };
+
   trang = callPackage ../tools/text/xml/trang { };
 
   tre = callPackage ../development/libraries/tre { };